John Travolta just testified again in the Bahamas -- and he explained how he learned of the alleged extortion plot against him.
Travolta said one of his employees, Ronald Zupancic, is the one who initially told him there was a threat against him. John said medic Tarino Lightborne threatened to release a document in order to "imply that the death of my son was intentional and I was culpable in some way."
Travolta said he then pulled his lawyer, Michael McDermott, into it -- who informed him the demand was for $25 million or the alleged extortionists would release stories implying that John was in some way to blame for his son Jett's death.
The attorney of one of the alleged extortionists -- Pleasant Bridgewater -- asked John if he was approached directly about the demands ... John said no, it all went through his lawyer.
John's off the stand now.
John Travolta Back on the Stand
9/30/2009 11:30 AM PDT BY TMZ STAFF
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